ASUS PRIME B650M-A WIFI Motherboards User Guide

: June 9, 2024
: Asus

ASUS PRIME B650M-A WIFI Motherboards

Copyright © 2022 ASUSTeK COMPUTER INC. All Rights Reserved.
No part of this manual, including the products and software described in it, may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language in any form or by any means, except documentation kept by the purchaser for backup purposes, without the express written permission of ASUSTeK COMPUTER INC. (“ASUS”).
Product warranty or service will not be extended if: (1) the product is repaired, modified or altered, unless such repair, modification of alteration is authorized in writing by ASUS; or (2) the serial number of the product is defaced or missing.
ASUS PROVIDES THIS MANUAL “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OR CONDITIONS OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL ASUS, ITS DIRECTORS, OFFICERS, EMPLOYEES OR AGENTS BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF PROFITS, LOSS OF BUSINESS, LOSS OF USE OR DATA, INTERRUPTION OF BUSINESS AND THE LIKE), EVEN IF ASUS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES ARISING FROM ANY DEFECT OR ERROR IN THIS MANUAL OR PRODUCT.
SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUAL ARE FURNISHED FOR INFORMATIONAL USE ONLY, AND ARE SUBJECT TO CHANGE AT ANY TIME WITHOUT NOTICE, AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY ASUS. ASUS ASSUMES NO RESPONSIBILITY OR LIABILITY FOR ANY ERRORS OR INACCURACIES THAT MAY APPEAR IN THIS MANUAL, INCLUDING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT.
Products and corporate names appearing in this manual may or may not be registered trademarks or copyrights of their respective companies, and are used only for identification or explanation and to the owners’ benefit, without intent to infringe.

Safety information

Electrical safety

To prevent electrical shock hazard, disconnect the power cable from the electrical outlet before relocating the system.
When adding or removing devices to or from the system, ensure that the power cables for the devices are unplugged before the signal cables are connected. If possible, disconnect all power cables from the existing system before you add a device.
Before connecting or removing signal cables from the motherboard, ensure that all power cables are unplugged.
Seek professional assistance before using an adapter or extension cord. These devices could interrupt the grounding circuit.
Ensure that your power supply is set to the correct voltage in your area. If you are not sure about the voltage of the electrical outlet you are using, contact your local power company.
If the power supply is broken, do not try to fix it by yourself. Contact a qualified service technician or your retailer.

Operation safety

Before installing the motherboard and adding components, carefully read all the manuals that came with the package.
Before using the product, ensure all cables are correctly connected and the power cables are not damaged. If you detect any damage, contact your dealer immediately.
To avoid short circuits, keep paper clips, screws, and staples away from connectors, slots, sockets and circuitry.
Avoid dust, humidity, and temperature extremes. Do not place the product in any area where it may become wet.
Place the product on a stable surface.
If you encounter technical problems with the product, contact a qualified service technician or your retailer.
Your motherboard should only be used in environments with ambient temperatures between 0°C and 40°C.

Button/Coin Batteries Safety Information

WARNING
KEEP OUT OF REACH OF CHILDREN Swallowing can lead to chemical burns, perforation of soft tissue, and death. Severe burns can occur within 2 hours of ingestion. Seek medical attention immediately.

About this guide

This user guide contains the information you need when installing and configuring the motherboard.

How this guide is organized
This guide contains the following parts:

Chapter 1: Product Introduction
This chapter describes the features of the motherboard and the new technology it supports. It includes descriptions of the switches, jumpers, and connectors on the motherboard.
Chapter 2: BIOS and RAID Support
This chapter tells how to boot into the BIOS, upgrade BIOS using the EZ Flash Utility and support on RAID.

Where to find more information
Refer to the following sources for additional information and for product and software updates.

ASUS website
The ASUS website (www.asus.com) provides updated information on ASUS hardware and software products.
Optional documentation
Your product package may include optional documentation, such as warranty flyers, that may have been added by your dealer. These documents are not part of the standard package.

Conventions used in this guide
To ensure that you perform certain tasks properly, take note of the following symbols used throughout this user guide.

CAUTION: Information to prevent damage to the components and injuries to yourself when trying to complete a task.
IMPORTANT: Instructions that you MUST follow to complete a task.
NOTE: Tips and additional information to help you complete a task.

Package contents

Check your motherboard package for the following items.

Motherboard 1 x PRIME B650M-A WIFI motherboard
Cables 2 x SATA 6Gb/s cables
Miscellaneous
- 1 x ASUS Wi-Fi moving antennas
- 1 x I/O Shield
- 1 x Screw package for M.2 SSD
Documentation 1 x User guide

If any of the above items is damaged or missing, contact your retailer.

PRIME B650M-A WIFI specifications summary

CPU| AMD Socket AM5 for AMD Ryzen™ 7000 Series Desktop Processors*

*** Refer to [www.asus.com ](http://www.asus.com/)for CPU support list.**

---|---
Chipset| AMD B650 Chipset

Memory

| 4 x DIMM, Max. 128GB, DDR5 ECC and Non-ECC, Un-buffered Memory*

Dual Channel Memory Architecture

Supports AMD EXTended Profiles for Overclocking (EXPO™)

OptiMem II

* Supported memory types, data rate(Speed), and number of DRAM modules vary depending on the CPU and memory configuration, for more information refer to www.asus.com for memory support list.

* Non-ECC, un-buffered DDR5 memory supports On-Die ECC function.

Graphics

| 1 x DisplayPort**

1 x VGA port

1 x HDMI® port***

Graphics specifications may vary between CPU types. Please refer to AMD CPU specifications.

** Supports max. 8K@60Hz as specified in DisplayPort 1.4.

***Supports 4K@60Hz as specified in HDMI 2.1.

Expansion Slots

| AMD Ryzen™ 7000 Series Desktop Processors

1 x PCIe 4.0 x16 slot (supports x16 mode)

AMD B650 Chipset

2 x PCIe 4.0 x16 slots (support x1 mode)

Please check the PCIe bifurcation table on the support site (https://www.asus.com/support/FAQ/1037507) /).

Storage

| Total supports 2 x M.2 slots and 4 x SATA 6Gb/s **ports* AMD Ryzen™ 7000 Series Desktop Processors**

M.2_1 slot (Key M), type 2242/2260/2280 (supports PCIe 5.0 x4 mode)

AMD B650 Chipset

M.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 mode) 4 x SATA 6Gb/s ports

*** AMD RAIDXpert2 Technology supports both PCIe RAID 0/1/10 and SATA RAID**

0/1/10.

Ethernet	1 x Realtek 2.5Gb Ethernet

Wireless & Bluetooth ®

| Wi-Fi 6

2×2 Wi-Fi 6 (802.11 a/b/g/n/ac/ax) Supports 2.4/5GHz frequency band Bluetooth® v5.2

USB

| Rear USB (Total 8 ports)

2 x USB 3.2 Gen 2 ports (2 x Type-A)
2 x USB 3.2 Gen 1 ports (2 x Type-A)
4 x USB 2.0 ports (4 x Type-A)

Front USB (Total 7 ports)

1 x USB 3.2 Gen 1 connector (supports USB Type-C®)
1 x USB 3.2 Gen 1 header supports 2 additional USB 3.2 Gen 1 ports
2 x USB 2.0 headers support 4 additional USB 2.0 ports

Audio

| **Realtek 7.1 Surround Sound High Definition Audio CODEC***

Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking
Supports up to 24-Bit/192kHz playback

Audio Features

Audio Shielding
Premium audio capacitors
Dedicated audio PCB layers
A chassis with an HD audio module in the front panel is required to support 7.1 Surround Sound audio output.

Back Panel I/O Ports|

2 x USB 3.2 Gen 2 ports (2 x Type-A)
2 x USB 3.2 Gen 1 ports (2 x Type-A)
4 x USB 2.0 ports (4 x Type-A)
1 x DisplayPort 1 x VGA port
1 x HDMI® port
1 x Wi-Fi Module
1 x Realtek 2.5Gb Ethernet port 3 x Audio jacks
1 x BIOS FlashBack™ button
1 x PS/2 Keyboard/Mouse combo port

1 x 24-pin Main Power connector

| 1 x 8-pin +12V Power connector
| Storage related
| 2 x M.2 slots (Key M)
| 4 x SATA 6Gb/s ports

Internal I/O Connectors

| USB

1 x USB 3.2 Gen 1 connector (supports USB Type-C®)
1 x USB 3.2 Gen 1 header supports 2 additional USB 3.2 Gen 1 ports
2 x USB 2.0 headers support 4 additional USB 2.0 ports

Miscellaneous

3 x Addressable Gen 2 headers 1 x Aura RGB header
1 x Clear CMOS header 1 x COM Port header
1 x Front Panel Audio header (AAFP) 1 x S/PDIF Out header
1 x Speaker header
1 x SPI TPM header (14-1 pin)
1 x 10-1 pin System Panel header

---|---

Special Features

| ASUS 5X PROTECTION III

DIGI+ VRM
LANGuard
Overvoltage Protection
SafeSlot Core+
Stainless-Steel Back I/O

ASUS Q-Design

Q-DIMM
Q-LED Core
Q-Slot

ASUS Thermal Solution

– VRM heatsink design

ASUS EZ DIY

BIOS FlashBack™ button
BIOS FlashBack™ LED

Aura Sync

Aura RGB header
Addressable Gen 2 headers

Software Features

| ASUS Exclusive Software

Armoury Crate

Aura Creator
Aura Sync
Fan Xpert 2+
Power Saving AI Suite 3
TurboV EVO
DIGI+ VRM
PC Cleaner ASUS CPU-Z

MyAsus

Norton Anti-virus software (Free Trial version) WinRAR

Software Features

| UEFI BIOS

ASUS EZ DIY

-ASUS CrashFree BIOS 3
ASUS EZ Flash 3
ASUS UEFI BIOS EZ Mode

---|---
BIOS| 256 Mb Flash ROM, UEFI AMI BIOS
Manageability| WOL by PME, PXE
Operating System| Windows® 11, Windows® 10 64-bit
Form Factor| mATX Form Factor

9.6 inch x 9.6 inch (24.4 cm x 24.4 cm)

Specifications are subject to change without notice. Please refer to the ASUS website for the latest specifications.
MyASUS offers a variety of support features such as helping to troubleshoot issues, optimizing product performance, integrating ASUS software, and recovery drive creation. Please scan the QR Code for installation guide and FAQ.
For more information on downloading and installing drivers and utilities for your motherboard, please scan the QR code below:

Product Introduction

Before you proceed

Take note of the following precautions before you install motherboard components or change any motherboard settings.

Unplug the power cord from the wall socket before touching any component.
Before handling components, use a grounded wrist strap or touch a safely grounded object or a metal object, such as the power supply case, to avoid damaging them due to static electricity.
Hold components by the edges to avoid touching the ICs on them.
Whenever you uninstall any component, place it on a grounded antistatic pad or in the bag that came with the component.
Before you install or remove any component, ensure that the ATX power supply is switched off or the power cord is detached from the power supply. Failure to do so may cause severe damage to the motherboard, peripherals, or components.
The pin definitions in this chapter are for reference only. The pin names depend on the location of the header/jumper/connector.
For more information on installing your motherboard, please scan the QR code below:

Motherboard overview

ASUS-PRIME-B650M-A-WIFI-Motherboards-6

Unplug the power cord before installing or removing the motherboard. Failure to do so can cause you physical injury and damage motherboard components.

Layout contents

CPU socket
The motherboard comes with an AMD Socket AM5 designed for AMD Ryzen™ 7000 Series Desktop Processors.
For more details, refer to Central Processing Unit (CPU).
DDR5 DIMM slots
The motherboard comes with Dual Inline Memory Modules (DIMM) slots designed for DDR5 (Double Data Rate 5) memory modules.
For more details, refer to System memory.
Expansion slots
This motherboard supports one PCIe 4.0 x16 (supporting x16 mode) graphics card and two PCIe 4.0 x16 (supporting x1 mode) network cards, SCSI cards and other cards that comply
with the PCI Express specification.
Additional PCIe bifurcation and M.2 settings for RAID function are also supported when a Hyper M.2 x16 series card is installed.
For full details on the PCIe bifurcation, you may visit the support site at https://www.asus.com/support/FAQ/1037507/.
The Hyper M.2 x16 series card is sold separately.
Adjust the PCIe bifurcation under BIOS settings.
Fan headers
The Fan headers allow you to connect fans to cool the system.
Header| Max. Current| Max. Power| Default Speed| Shared Control
---|---|---|---|---
CPU_FAN| 1A| 12W| Q-Fan Controlled| A
CPU_OPT| 1A| 12W| Q-Fan Controlled| A
CHA_FAN1| 1A| 12W| Q-Fan Controlled| –
CHA_FAN2| 1A| 12W| Q-Fan Controlled| –
CHA_FAN3| 1A| 12W| Q-Fan Controlled| –
Power connectors
These Power connectors allow you to connect your motherboard to a power supply. The power supply plugs are designed to fit in only one orientation. Find the proper orientation and push down firmly until the power supply plugs are fully inserted.
Ensure to connect the 8-pin power plug.
- For a fully configured system, we recommend that you use a power supply unit (PSU) that complies with ATX 12V Specification 2.0 (or later version) and provides a minimum power of 350W.
- We recommend that you use a PSU with a higher power output when configuring a system with more power-consuming devices. The system may become unstable or may not boot up if the power is inadequate.
- If you want to use two or more high-end PCI Express x16 cards, use a PSU with 1000W power or above to ensure the system stability.
M.2 slots (Key M)
The M.2 slots allow you to install M.2 devices such as M.2 SSD modules.
- AMD Ryzen™ 7000 Series Desktop Processors
  M. 2_1 slot (Key M), type 2242/2260/2280 (supports PCIe 5.0 x4 mode)
- AMD B650 Chipset
  M. 2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 mode)
  The M.2 SSD module is purchased separately.
SATA 6Gb/s ports
The SATA 6Gb/s ports allow you to connect SATA devices such as optical disc drives and hard disk drives via SATA cables.
USB 3.2 Gen 1 Type-C® Front Panel connector
The USB 3.2 Gen 1 Type-C® connector allows you to connect a USB 3.2 Gen 1 Type-C® module for an additional USB 3.2 Gen 1 Type-C® port on the front panel. The USB 3.2 Gen 1 Type-C® connector provides data transfer speeds of up to 5 Gb/s.
The USB 3.2 Gen 1 Type-C® module is purchased separately.
USB 3.2 Gen 1 header
The USB 3.2 Gen 1 header allows you to connect a USB 3.2 Gen 1 module for additional USB 3.2 Gen 1 ports. The USB 3.2 Gen 1 header provides data transfer speeds of up to 5 Gb/s.
The USB 3.2 Gen 1 module is purchased separately.
USB 2.0 headers
The USB 2.0 headers allow you to connect USB modules for additional USB 2.0 ports. The USB 2.0 headers provide data transfer speeds of up to 480 Mb/s.
DO NOT connect a 1394 cable to the USB connectors. Doing so will damage the motherboard!
The USB 2.0 module is purchased separately.
Addressable Gen 2 headers
The Addressable Gen 2 headers allow you to connect individually addressable RGB WS2812B LED strips or WS2812B based LED strips.
The Addressable Gen 2 header supports WS2812B addressable RGB LED strips (5V/Data/Ground), with a maximum power rating of 3A (5V) and the addressable headers on this board can handle a combined maximum of 500 LEDs. Before you install or remove any component, ensure that the power supply is switched off or the power cord is detached from the power supply. Failure to do so may cause severe damage to the motherboard, peripherals, or components.
- Actual lighting and color will vary with LED strip.
- If your LED strip does not light up, check if the addressable RGB LED strip is connected in the correct orientation, and the 5V connector is aligned with the 5V header on the motherboard.
- The addressable RGB LED strip will only light up when the system is powered on.
- The addressable RGB LED strip is purchased separately.
Aura RGB header
The Aura RGB header allows you to connect RGB LED strips.
The Aura RGB header supports 5050 RGB multi-color LED strips (12V/G/R/B), with a maximum power rating of 3A (12V), and no longer than 3m.

Before you install or remove any component, ensure that the ATX power supply is switched off or the power cord is detached from the power supply. Failure to do so may cause severe damage to the motherboard, peripherals, or components.

  * Actual lighting and color will vary with LED strip.
  * If your LED strip does not light up, check if the RGB LED extension cable and the RGB LED strip are connected in the correct orientation, and the 12V connector is aligned with the 12V header on the motherboard.
  * The LED strip will only light up when the system is powered on.
  * The LED strip is purchased separately.

Clear CMOS header
The Clear CMOS header allows you to clear the Real Time Clock (RTC) RAM in the CMOS, which contains the date, time, system passwords, and system setup parameters.

To erase the RTC RAM:

  * Turn OFF the computer and unplug the power cord.
  * Short-circuit pin 1-2 with a metal object or jumper cap for about 5-10 seconds.
  * Plug the power cord and turn ON the computer.
  * Hold down the <Del> key during the boot process and enter BIOS setup to re-enter data.

DO NOT short-circuit the pins except when clearing the RTC RAM. Short- circuiting or placing a jumper cap will cause system boot failure!
If the steps above do not help, remove the onboard button cell battery and short the two pins again to clear the CMOS RTC RAM data. After clearing the CMOS, reinstall the button cell battery.

COM Port header
The COM (Serial) Port header allows you to connect a COM port module. Connect the COM port module cable to this header, then install the module to a slot opening on the system chassis.

The COM port module is purchased separately.

Front Panel Audio header
The Front Panel Audio header is for a chassis-mounted front panel audio I/O module that supports HD Audio. Connect one end of the front panel audio I/O module cable to this header.

We recommend that you connect a high-definition front panel audio module to this header to avail of the motherboard’s high-definition
audio capability.

S/PDIF Out header
The S/PDIF Out header allows you to connect the Sony/Philips Digital Interface (S/PDIF) Out module.
The S/PDIF module is purchased separately.
Speaker header
The 4-pin header is for the chassis-mounted system warning speaker. The speaker allows you to hear system beeps and warnings.
SPI TPM header
This header supports a Trusted Platform Module (TPM) system with a Serial Peripheral Interface (SPI), allowing you to securely store keys, digital
certificates, passwords, and data. A TPM system also helps enhance network security, protects digital identities, and ensures platform integrity.
The TPM module is purchased separately.
System Panel header
This header supports several chassis-mounted functions.
System Power LED header (PWR_LED)
The 2-pin header allows you to connect the System Power LED. The System Power LED lights up when the system is connected to a power source, or when you turn on the system power, and blinks when the system is in sleep mode.
+HDD_LED- RESET Storage Device Activity LED header (HDD_LED)
The 2-pin header allows you to connect the Storage Device
Activity LED. The Storage Device Activity LED lights up or blinks when data is read from or written to the storage device or storage device add-on card.
Power Button/Soft-off Button header (PWR_BTN)
The 2-pin header allows you to connect the system power button. Press the power button to power up the system, or put the system into sleep or soft-off mode (depending on the operating system settings).
Reset button header (RESET)
The 2-pin header allows you to connect the chassis-mounted reset button. Press the reset button to reboot the system.
BIOS FlashBack™ LED
The BIOS FlashBack™ LED lights up or blinks to indicate the status of the BIOS FlashBack™.

Rear panel connectors

ASUS-PRIME-B650M-A-WIFI-Motherboards-19

Video Graphics Adapter (VGA) port. This 15-pin port is for a VGA monitor or other VGA-compatible devices.
PS/2 Keyboard/Mouse combo port. This port is for a PS/2 keyboard or mouse.
USB 2.0 port with BIOS FlashBackTM function. Insert a USB storage device to this Universal Serial Bus (USB) port to run BIOS FlashBackTM.
2.5Gb Ethernet port. This port allows 2.5Gbps Ethernet connection to a Local Area Network (LAN) through a network hub. Refer to the table below for the Ethernet port LED indications.

Realtek 2.5Gb Ethernet port LED indications Activity Link LED Speed LED

10 Mbps connection

Line In port (light blue). This port connects the tape, CD, DVD player, or other audio sources.
Line Out port (lime). This port connects a headphone or a speaker. In 4-channel, 5.1-channel, and 7.1-channel configurations, the function of this port becomes Front Speaker Out.
HDMI® port. This port is for a High-Definition Multimedia Interface (HDMI®) connector, and is HDCP compliant allowing playback of HD DVD, Blu-ray, and other protected content.
DisplayPort. This port is for a DisplayPort-compatible device.
BIOS FlashBackTM button. BIOS FlashBack™ allows you to easily update the BIOS without entering the existing BIOS or operating system.

To use BIOS FlashBack™:

Visit https://www.asus.com/support/ and download the latest BIOS version for this motherboard.
Manually rename the file as PB650MAW.CAP, or launch the BIOSRenamer.exe application to automatically rename the file, then copy it to your USB storage device. The BIOSRenamer.exe application is zipped together with your BIOS file when you download a BIOS file for a BIOS FlashBack™ compatible motherboard.
Keep power supply connected to the motherboard (without a memory or CPU installed). Insert the USB storage device to the BIOS FlashBack™ port.
Press the BIOS FlashBack™ button for three (3) seconds until the BIOS FlashBack™ LED blinks three times, indicating that the BIOS FlashBack™ function is enabled.
Wait until the light goes out, indicating that the BIOS updating process is completed.
USB 3.2 Gen 1 (up to 5Gbps) ports. These 9-pin Universal Serial Bus (USB) ports connect to a USB 3.2 Gen 1 device.
USB 2.0 ports. These 4-pin Universal Serial Bus (USB) ports are for USB 2.0 devices.
USB 3.2 Gen 2 (up to 10Gbps) ports (teal blue, Type A). These 9-pin Universal Serial Bus 3.2 (USB 3.2) ports are for USB 3.2 Gen 2 devices.
Wi-Fi 6 ports. Connect the bundled ASUS Wi-Fi antenna connectors to these ports.
Microphone port (pink). This port connects a microphone.
Refer to the audio configuration table for the function of the audio ports in 2, 4, 5.1, or 7.1-channel configuration.

Audio 2, 4, 5.1 or 7.1-channel configuration

Port| 2- channel| 4- channel| 5.1- channel| 7.1- channel
---|---|---|---|---
Light Blue (Rear panel)| –| Rear Speaker Out| Rear Speaker Out| Rear Speaker Out
Lime

(Rear panel)

| Front Speaker Out| Front Speaker Out| Front Speaker Out| Front Speaker Out
Pink

(Rear panel)

| –| –| Center/Subwoofer| Center/Subwoofer
Lime

(Front panel)

| –| –| –| Side Speaker Out
Pink

(Front panel)

| –| –| –| –

To configure a 7.1-channel audio output:
Use a chassis with HD audio module in the front panel to support a 7.1-channel audio output.

Central Processing Unit (CPU)

This motherboard comes with an AMD Socket AM5 designed for AMD Ryzen™ 7000 Series Desktop Processors.
Unplug all power cables before installing the CPU.

The AM5 socket has a different pinout design. Ensure that you use a CPU designed for the AM5 socket. The CPU fits in only one correct orientation. DO NOT force the CPU into the socket to prevent bending the connectors on the socket and damaging the CPU!
ASUS will not cover damages resulting from incorrect CPU installation/removal, incorrect CPU orientation/placement, or other damages resulting from negligence by the user.

Installing the CPU

ASUS-PRIME-B650M-A-WIFI-Motherboards-22

Apply the Thermal Interface Material to the CPU cooling system and CPU before you install the cooling system, if necessary.

System memory

This motherboard comes with four Double Data Rate 5 (DDR5) Dual Inline Memory Module
(DIMM) sockets. The figure illustrates the location of the DDR5 DIMM sockets:

Channel Sockets

Channel A DIMM_A1 & DIMM_A2
Channel B DIMM_B1 & DIMM_B2

You may install varying memory sizes in Channel A and Channel B. The system maps the total size of the lower-sized channel for the dual-channel configuration. Any excess memory from the higher-sized channel is then mapped for single-channel operation.
A DDR5 memory module is notched differently from a DDR, DDR2, DDR3 or DDR4 module. DO NOT install a DDR, DDR2, DDR3 or DDR4 memory module to the DDR5 slot.
You may install 8 GB, 16 GB, and 32 GB unbuffered, ECC and Non-ECC DDR5 DIMMs into the DIMM sockets.
The default memory operation frequency is dependent on its Serial Presence Detect (SPD), which is the standard way of accessing information from a memory module. Under the default state, some memory modules for overclocking may operate at a lower frequency than the vendor-marked value.
For system stability, use a more efficient memory cooling system to support a full memory load.
Always install DIMMs with the same CAS latency. For optimal compatibility, we recommend that you install memory modules of the same version or date code (D/C) from the same vendor. Check with the retailer to get the correct memory modules.
Refer to www.asus.com for the latest Memory QVL (Qualified Vendors Lists), and memory frequency support depends on the CPU types.

Recommended memory configurations

ASUS-PRIME-B650M-A-WIFI-Motherboards-24

Installing a DIMM

ASUS-PRIME-B650M-A-WIFI-Motherboards-25

To remove a DIMM

BIOS and RAID Support

For more details on BIOS and RAID configurations, please refer to www.asus.com/support.

Knowing BIOS

The new ASUS UEFI BIOS is a Unified Extensible Interface that complies with UEFI architecture, offering a user-friendly interface that goes beyond the traditional keyboard-only BIOS controls to enable a more flexible and convenient mouse input. You can easily navigate the new UEFI BIOS with the same smoothness as your operating system. The term “BIOS” in this user manual refers to “UEFI BIOS” unless otherwise specified. BIOS (Basic Input and Output System) stores system hardware settings such as storage device configuration, overclocking settings, advanced power management, and boot device configuration that are needed for system startup in the motherboard CMOS. In normal circumstances, the default BIOS settings apply to most conditions to ensure optimal performance. DO NOT change the default BIOS settings except in the following circumstances:

An error message appears on the screen during the system bootup and requests you to run the BIOS Setup.
You have installed a new system component that requires further BIOS settings or update.

Inappropriate BIOS settings may result to instability or boot failure. We strongly recommend that you change the BIOS settings only with the help of a trained service
personnel.
BIOS settings and options may vary due to different BIOS release versions. Please refer to the latest BIOS version for settings and options.

For more information on BIOS configurations, please refer to
https://www.asus.com/support, or download the BIOS manual by scanning the QR code.

BIOS Setup program

Use the BIOS Setup to update the BIOS or configure its parameters. The BIOS screens include navigation keys and brief onscreen help to guide you in using the BIOS Setup program.

Entering BIOS at startup
To enter BIOS Setup at startup, press or during the Power-On Self Test (POST). If you do not press or , POST continues with its routines.

Entering BIOS Setup after POST
To enter BIOS Setup after POST:

Press ++ simultaneously.
Press the reset button on the system chassis.
Press the power button to turn the system off then back on. Do this option only if you failed to enter BIOS Setup using the first two options.

After doing either of the three options, press key to enter BIOS.

Ensure that a USB mouse is connected to your motherboard if you want to use the mouse to control the BIOS Setup program.
If the system becomes unstable after changing any BIOS setting, load the default settings to ensure system compatibility and stability. Select the Load Optimized Defaults item under the Exit menu or press hotkey .
If the system fails to boot after changing any BIOS setting, try to clear the CMOS and reset the motherboard to the default value.
The BIOS Setup program does not support Bluetooth devices.

BIOS menu screen
The BIOS Setup program can be used under two modes: EZ Mode and Advanced Mode. You can change modes from Setup Mode in Boot menu or by pressing the hotkey.

ASUS EZ Flash 3

The ASUS EZ Flash 3 feature allows you to update the BIOS without using an OS- based utility.
Ensure to load the BIOS default settings to ensure system compatibility and stability. Select the Load Optimized Defaults item under the Exit menu or press hotkey .

To update the BIOS:

This function can support devices such as a USB flash disk with FAT 32/16 format and single partition only.
DO NOT shut down or reset the system while updating the BIOS to prevent system boot failure!

Insert the USB flash disk that contains the latest BIOS file to the USB port.
Enter the Advanced Mode of the BIOS Setup program. Go to the Tool menu to select ASUS EZ Flash 3 Utility and press .
Press the Left/Right arrow keys to switch to the Drive field.
Press the Up/Down arrow keys to find the USB flash disk that contains the latest BIOS, and then press .
Press the Left/Right arrow keys to switch to the Folder field.
Press the Up/Down arrow keys to find the BIOS file, and then press to perform the BIOS update process. Reboot the system when the update process is done.

ASUS CrashFree BIOS 3

The ASUS CrashFree BIOS 3 utility is an auto recovery tool that allows you to restore the BIOS file when it fails or gets corrupted during the updating process. You can restore a corrupted BIOS file using a USB flash drive that contains the BIOS file.
Recovering the BIOS

Download the latest BIOS version for this motherboard from https://www.asus.com/support/.
Rename the BIOS file as ASUS.CAP or PB650MAW.CAP and copy the renamed BIOS file to a USB flash drive.
Turn on the system.
Insert the USB flash drive containing the BIOS file to a USB port.
The utility automatically checks the devices for the BIOS file. When found, the utility reads the BIOS file and enters ASUS EZ Flash 3 automatically.
The system requires you to enter BIOS Setup to recover the BIOS setting. To ensure system compatibility and stability, we recommend that you press to load default BIOS values.

DO NOT shut down or reset the system while updating the BIOS! Doing so can cause system boot failure!

RAID configurations

The motherboard comes with the AMD RAIDXpert2 Technology that supports Volume, RAIDABLE, RAID 0, RAID 1, and RAID 10 (depends on system licensing) configurations.

For more information on configuring your RAID sets, please refer to the RAID Configuration Guide which you can find at https://www.asus.com/support, or by scanning the QR code.

RAID definitions
Volume provides the ability to link-together storage from one or several disks, regardless of the size of the space on those disks. This configuration is useful in scavenging space on disks unused by other disks in the array. This configuration does not provide performance benefits or data redundancy, disk failure will result in data loss.
RAIDABLE arrays (also known as RAID Ready) are a special type of Volume (JBOD) that allows the user to add more storage space or create a redundant array after a system is installed. RAIDABLE arrays are created using Option ROM, UEFI, or rcadm.

The ability to create RAIDABLE arrays may vary per system.

RAID 0 (Data striping) optimizes two identical hard disk drives to read and write data in parallel, interleaved stacks. Two hard disks perform the same work as a single drive but at a sustained data transfer rate, double that of a single disk alone, thus improving data access
and storage. Use of two new identical hard disk drives is required for this setup.
RAID 1 (Data mirroring) copies and maintains an identical image of data from one drive to a second drive. If one drive fails, the disk array management software directs all applications to the surviving drive as it contains a complete copy of the data in the other drive. This RAID configuration provides data protection and increases fault tolerance to the entire system. Use two new drives or use an existing drive and a new drive for this setup. The new drive must be of the same size or larger than the existing drive.
RAID 10 is data striping and data mirroring combined without parity (redundancy data) having to be calculated and written. With the RAID 10 configuration you get all the benefits of both RAID 0 and RAID 1 configurations. Use four new hard disk drives or use an existing drive and three new drives for this setup.

FCC Compliance Information

Responsible Party: Asus Computer International
Address: 48720 Kato Rd., Fremont, CA 94538,
USA Phone / Fax No: (510)739-3777 / (510)608-4555

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:

This device may not cause harmful interference, and
This device must accept any interference received, including interference that may cause undesired operation.

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.

RF exposure warning
This equipment must be installed and operated in accordance with provided instructions and the antenna(s) used for this transmitter must be installed to provide a separation distance of at least 20 cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter. End-users and installers must be provide with antenna installation instructions and transmitter operating conditions for satisfying RF exposure compliance.

HDMI Trademark Notice
The terms HDMI, HDMI High-Definition Multimedia Interface, and the HDMI Logo are trademarks or registered trademarks of HDMI Licensing Administrator, Inc.

Compliance Statement of Innovation, Science and Economic
Development Canada (ISED)
This device complies with Innovation, Science and Economic Development Canada licence exempt RSS standard(s). Operation is subject to the following two conditions:

This device may not cause interference, and
This device must accept any interference, including interference that may cause undesired operation of the device.

Operation in the band 5150–5250 MHz is only for indoor use to reduce the potential for harmful interference to co-channel mobile satellite systems. CAN ICES-003(B)/NMB-003(B)

Declaration of compliance for product environmental regulation
ASUS follows the green design concept to design and manufacture our products, and makes sure that each stage of the product life cycle of ASUS product is in line with global environmental regulations. In addition, ASUS disclose the relevant information based on regulation requirements.
Please refer to http://csr.asus.com/Compliance.htm for information disclosure based on regulation requirements ASUS is complied with:

EU REACH and Article 33
Complying with the REACH (Registration, Evaluation, Authorisation, and Restriction of Chemicals) regulatory framework, we published the chemical substances in our products at ASUS REACH website at http://csr.asus.com/english/REACH.htm.

EU RoHS
This product complies with the EU RoHS Directive. For more details, see http://csr.asus.com/english/article.aspx?id=35.

India RoHS
This product complies with the “India E-Waste (Management) Rules, 2016” and prohibits use of lead, mercury, hexavalent chromium, polybrominated biphenyls (PBBs) and polybrominated diphenyl ethers (PBDEs) in concentrations exceeding 0.1% by weight in homogenous materials and 0.01% by weight in homogenous materials for cadmium, except for the exemptions listed in Schedule II of the Rule.

Vietnam RoHS
ASUS products sold in Vietnam, on or after September 23, 2011,meet the requirements of the Vietnam Circular 30/2011/TT-BCT.

ASUS Recycling/Takeback Services
ASUS recycling and takeback programs come from our commitment to the highest standards for protecting our environment. We believe in providing solutions for you to be able to responsibly recycle our products, batteries, other components as well as the packaging materials. Please go to http://csr.asus.com/english/Takeback.htm for detailed recycling information in different regions.

DO NOT throw the motherboard in municipal waste. This product has been designed to enable proper reuse of parts and recycling. This symbol of the crossed out wheeled bin indicates that the product (electrical and electronic equipment) should not be placed in municipal waste. Check local regulations for disposal of electronic products.
DO NOT throw the mercury-containing button cell battery in municipal waste. This symbol of the crossed out wheeled bin indicates that the battery should not be placed in municipal waste.

France sorting and recycling information
Points de collected sur www.quefairedemesdechets.fr

Safety Precautions
Accessories that came with this product have been designed and verified for the use in connection with this product. Never use accessories for other products to prevent the risk of electric shock or fire.

Simplified UKCA Declaration of Conformity
ASUSTek Computer Inc. hereby declares that this device is in compliance with the essential requirements and other relevant provisions of The Radio Equipment Regulations 2017 (S.I. 2017/1206). Full text of UKCA declaration of conformity is available at https://www.asus.com/support/.
The WiFi operating in the band 5150-5350MHz shall be restricted to indoor use for the country listed below:

UK
UKCA RF Output table (The Radio Equipment Regulations 2017)
WI-FI 6 RTL8852BE (Model: RTL8852BE):

Function	Frequency	Maximum Output Power (EIRP)

WiFi

| 2412 – 2472 MHz| 18.609 dBm
5150 – 5350 MHz| 19.665 dBm
5470 – 5725 MHz| 19.595 dBm
5725 – 5850 MHz| 11.373 dBm
Bluetooth| 2402- 2480 MHz| 13.286 dBm

Simplified EU Declaration of Conformity
ASUSTek Computer Inc. hereby declares that this device is in compliance with the essential requirements and other relevant provisions of Directive 2014/53/EU. Full text of EU declaration of conformity is available at https://www.asus.com/support/.

AT	BE	BG	CZ	DK	EE	FR
DE	IS	IE	IT	EL	ES	CY
LV	LI	LT	LU	HU	MT	NL
NO	PL	PT	RO	SI	SK	TR
FI	SE	CH	HR	UK(NI)

CE RED RF Output table (Directive 2014/53/EU) WI-FI 6 RTL8852BE (Model: RTL8852BE):

Function	Frequency	Maximum Output Power (EIRP)

WiFi

| 2412 – 2472 MHz| 18.609 dBm
5150 – 5350 MHz| 19.665 dBm
5470 – 5725 MHz| 19.595 dBm
5725 – 5850 MHz| 11.373 dBm
Bluetooth| 2402- 2480 MHz| 13.286 dBm

Warranty

ASUS Guarantee Information

ASUS offers a voluntary manufacturer’s Commercial Guarantee.
ASUS reserves the right to interpret the provisions of the ASUS Commercial Guarantee.
This ASUS Commercial Guarantee is provided independently and in addition to the statutory Legal Guarantee and in no way affects or limits the rights under the Legal Guarantee.

For all the guarantee information, please visit https://www.asus.com/support.

https://www.asus.com/vn/support.

ASUS contact information
ASUSTeK COMPUTER INC.
Address: 1F., No. 15, Lide Rd., Beitou Dist., Taipei City 112
ASUS COMPUTER INTERNATIONAL (America)
Address: 48720 Kato Rd., Fremont, CA 94538, USA
ASUS COMPUTER GmbH (Germany and Austria)
Address: Harkortstrasse 21-23, 40880 Ratingen, Germany
ASUSTeK (UK) LIMITED
Address: 1st Floor, Sackville House, 143-149 Fenchurch Street, London, EC3M 6BL,
England, United Kingdom

Service and Support
Visit our multi-language website at https://www.asus.com/support/.